745168073 has 4 divisors (see below), whose sum is σ = 802488708. Its totient is φ = 687847440.

The previous prime is 745168057. The next prime is 745168091. The reversal of 745168073 is 370861547.

745168073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 212343184 + 532824889 = 14572^2 + 23083^2 .

It is a cyclic number.

It is not a de Polignac number, because 745168073 - 2⁴ = 745168057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 745168073.

It is not an unprimeable number, because it can be changed into a prime (745168003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28660298 + ... + 28660323.

It is an arithmetic number, because the mean of its divisors is an integer number (200622177).

Almost surely, 2^745168073 is an apocalyptic number.

It is an amenable number.

745168073 is a deficient number, since it is larger than the sum of its proper divisors (57320635).

745168073 is a wasteful number, since it uses less digits than its factorization.

745168073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57320634.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 745168073 is about 27297.7668134227. The cubic root of 745168073 is about 906.6049369707.

The spelling of 745168073 in words is "seven hundred forty-five million, one hundred sixty-eight thousand, seventy-three".